Avengers:
Iron Man (will be incapacitated for some portion of the film)
Captain America
Thor
Hulk
Black Widow (will betray the team somehow)
Hawkeye (will have more time to shine with everything else going down the ****ter)
Falcon

Is it so unlikely that Hawkey and BW leaves, or at least play only minor roles? I mean, there's a limit to how many heroes they can juggle in one movie.. In A1, Hawkeye was a mute enemy for most of the film, and didn't really have much to say in the third act either. Same sort of goes for BW; she was kind of just here, as a glorified SHILD agent. And Thor came in pretty late.

I don't see them having much more than six on the team in one film, really. And the two pre-mentioned one are obviously(?) the first to go, if we're going to switch anyone out for some fresh meat.

I don't know if any info about whether Ant-Man will be in A2 has been released, but I hope he will. Would have a huge impact on the success of the solo film.

Hawkeye really didnt do much in Avengers, and doesnt seem to be part of any of the prior films to Avengers 2. GA who are not comic fans dont even know his name is Hawkeye, to them his Agent Barton. So il rather take him out, have him be in a movie or guest star on the SHIELD TV series then bring him back for Avengers 3. I just think his character has to be fleshed out a little more in another movie before returning to Avengers.